Brassknuckles possesses superhuman strength (Class 25?) and durability, as well as the ability to heal or regenerate (or be rebuilt) from virtually any injury. He also carries a number of powerful energy-blasters and the like. While he is a skilled and savage warrior, his ultimate goal is his own destruction, so he seeks to fight against overwhelming odds, in the hopes that someone can final take him down forever. He is an extreme masochist and seeks "the buzz...from that death kick...I need it!"

Unknown. Brassknuckles commented, "They'll put me back together, they always put me back together..." This would seem to indicate that he serves or is served by some agency that rebuilds him, and possibly guides his missions.
(Death Metal#2) - Brassknuckles overpowered a squad of warriors. He was really annoyed with their poor aim.
(Death Metal#3-4) - Death Metal, in an effort to escape Mys-Tech's Psycho-Warriors, teleported to an unidentified planet. Brassknuckles saw him arrive and attacked him, hoping to make him mad enough to want to kill him.
Death Metal did indeed attack him, and Brassknuckles kept trying to goad him into using lethal force. Spirit, another woman seeking death, interfered with the battle, skewering his chest. As they fought, Mys-Tech relocated Death Metal and attempted to capture and enslave him. Brassknuckles attacked Mys-Tech and the Techno-Warriors, hoping that they could succeed at killing him, where Spirit and Death Metal had failed. However, Death Metal teleported himself, Brassknuckles, and Spirit away--promising Brassknuckles a world of hurt if he joined him in a mission--which was exactly what he wanted. They then stopped a mining colony from blowing themselves up.
Whether they remained together for any further missions is unrevealed...and likely to stay that way.